adj.未加码的

Performance of Uncoded WCDMA Uplink System with Perfect Chann. WCDMA系统基本原理06基本信令流程.

The scheme can keep frequency bandwidth and symbol rate as the uncoded MFSK system. 该方案可保证频带宽度和符号速率同未编码的MFSK系统一样。

Thus the soft Viterbi decoding algorithm can be performed.It is shown that more coding advantages can be gotten compared with the traditional uncoded DUSTM which is deco... 仿真结果表明该方案相比传统的基于单符号最大似然解调的DUSTM系统性能有大幅提升,且比编码DUSTM系统具有更高的频谱利用率。

An efficient Sphere Decoding (SD) algorithm is proposed for uncoded Multi-Input Multi-Output (MIMO) systems with a large number of antennas and higher modulation constellations. 该文针对无编码的多输入多输出无线通信系统中的最大似然检测接收机在发端天线数较多、调制阶数较高时计算复杂度过高的问题，提出了一种低复杂度的球形译码算法。

The simulation result of three level coded ultra wideband systems show that the bit error performance has been improved prominently compared with uncoded situation. 三层编码的超宽带系统的误码性能仿真表明：比较未编码系统，误码性能得到明显的改善；

The simulation results show that the performance of uncoded Symbol Error Rate (SER) can reach the bound of ideal channel estimation at the proper step size. 仿真结果表明，选择合适的步长，算法误符号率性能基本接近理想估计的性能界。